Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

237. Contraposition — N. contraposition†, opposition; polarity;

inversion &c 218; opposite side; reverse, inverse; counterpart; antipodes; opposite poles, North and South. antonym, opposite (contrariety) 14. V. be opposite &c adj.; subtend. Adj. opposite; reverse, inverse; converse, antipodal, subcontrary†; fronting, facing, diametrically opposite. Northern, septentrional, Boreal, arctic; Southern, Austral, antarctic. Adv. over, over the way, over against; against; face to face, vis-a- vis; as poles asunder.